Resilient suspension device for vehicles



'n May 29. 1928.

1,671,506 J. BERTRAND RESILIENT SUSPENSION DEVICE FOR VEHICLES y l' "Patented May 29, '1928.1'

'y JEAN BERTRANDQOFvEasAlimnsgFRANcEf l ."RESILIENT enisriiivsv)1v Damian` FongvnivI-CLES;

Application med November 4,' lea'a'seriai N'p. 146,277,211111 inname Nvmberfisiieaa f invention relates 'to lan improvedyde-fable the rodsll meuiited j l u vice for resilient suspension rwhich ischiefly.

V'applicable to motor vehicles. It consists es V A. f sentially in the fact that the 'vehicle'frame is supported upon the axles throughfthe mie@l dium of four bell crank levers Whichare'piv-i lota'lly" connected ywith thev longitudinall beams of the" vehicle vrameythe arms of' said levers being connected together in pairs the arms 7.

rigid butare slightly lexible, saidrods being 3 provided with the turnbuckles -14. .f v

f-It has been shown by experience thatin g 'certain cases the rods y13v which willfbend to -v'.

'Y `10 aslighty degreel by reason of their length,` 65

will be suiicient' to provid'ea very'easy 'and i flexible motion. for the suspension, whereas i in otherfcases'thesaid rods will ac tbytheir i A rigidity in'such manner as to'tiansfer from if one axle 'to 'the other `the'stresses'which wouldl'Q, j f

lon leach side 'of the `frame by a rod which although substantially rigid1 is slightlyflexf ible,\vvhilsttheother arms of the levers are supported upon the'axles. f y Y;

f A A' suspension device has already been pro-f` l the rods to the stresses decreases yas they are 15` posedin which the arms ofthe front levers areconnectedvvith thearms of the rear lev-K ers by springs subjected to comipressionor extension, but-hitherto no'use hasv been made of rods which althouglrsubstantially rigid Aare'slightly flexible,` Asuch rods offeringv the special feature s as v compared jwith springsv consisting in the fact that the resistance fof `tendto distort'the' vehiclev rarneggand bythe f y i' same tlme' .they will exercise a] dampingiy effct V1115011 the reactions, f*

, `The saidv rods'which vconsistofmetal'or other suitable material,-nnay.be made' solid 75 or hollow, or may be given any' suitableycross section' whereby. they ywill be suhcien'tlygrigid but will be enabled to bend ara 'Slight degree. Instead ofa singlerod, tvvof,A f

bent, whereas the resistances of the springs Y y or 'more `rods connected vtogether may be 80 25 subjected to compression or traction'will increase. v A y Y employed. f .g .y n n A The invention will be hereinafter :,de'fy rIhe inyention' is evidently'-not limited to` i. scribed with reference' togthe diagrammatic the `particular construction 'andA arrange?4 ment of'parts `hereinabove described'f which I v may be variedas required without exceeding" 85 the scope ofthe invention;`

drawings in which:v i l v30 Fig..1 is an elevational view. and Fig. 2 a

plan view of a suspension arrangement for i l i Aa'vehicle in'accordance with the invention. Having so described Amy said, invention In the drawings, 1 lis the ordinary triangle andvfhow itis tobe performed, Ideclare thatv connecting thejfront axle with the vehiclek What I olaimis; 'l y 35 frame byja ball joint; 2 is the driving shaftv l y 11.' In a' vehicle', afront vand rear axle',kv a for the rear'axle; 3f?) are the longitudinal loady vsupporting.frame, a bell Crankllve. l 'beams of the vehicle frame.

l l v 4. pivoted to `each.r end ofthe frame adjacent@V I' 'i' 7 .The elastic suspension ofthe vehicleframe y the front and rear axle, 'one armv of each Il 'i from the axles of thev wheels isy effected in. bell cranlrleverl being freely mountedon-'itss-'f' 40 ythe following manner in accordance with the respectivela'xle,y and an adjustableyieldable '95 i` f invention.'y The longitudinal beams are rod interconnecting said '.bell crank'levers-M.; mounted upon Vthev ront-andfrear axles t at their remaining armf.;v 2'@ 1 j v and 5 by means of bell crank' levers whosej 2. In a vehicle,ga front andrear'axlaeach having a movable sleeve;'mountedfthereon, afload supporting' frameQ'a'bell crank' lever 10o pivoted to `'each'end .ofthe frame, adjacentf i l 'the front'andrea'r` axle, one arm'hof eachv pivotingy shafts 6r arefmounted in suitable rM455, curved .ends .of the longitudinal beams 3 or i jin separately secured members, The connection betweenthe arms '7 of the V'bell crank levers and "the vehiclev axles is I; -`eli'ect'ed by means of the links 8 vvhichfare rotatably mounted onthe vehicle axles and are pivotally connected 'with .the lends 4of "the i arms 17. VIn the construction shown inthe drawingsg thefsaid links are mounted on'the l` vehicle axles by suitable collars, and are ypivoted at'9 .to the sleeves l() `which areslid,I

Signature., i V .I i

axle,: and' an adjustablefyieldable 'rodinter: connecting said bell remaining arm.- J .f

Inv testimony `whereof have afixedmyf- 

